Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830840 | Operation method for polymer electrolytic fuel cell | Kazuhito Hatoh, Osamu Sakai, Hideo Ohara, Junji Niikura, Toshihiro Matsumoto +1 more | 2004-12-14 |
| 6818339 | Polymer electrolyte type fuel cell | Yasushi Sugawara, Makoto Uchida, Eiichi Yasumoto, Teruhisa Kanbara, Junji Morita +6 more | 2004-11-16 |
| 6746793 | Polymer electrolyte fuel cell | Eiichi Yasumoto, Kazuhito Hatoh, Makoto Uchida, Yasushi Sugawara, Teruhisa Kanbara +6 more | 2004-06-08 |
| 6689504 | Fuel cell stack with separator of a laminate structure | Toshihiro Matsumoto, Kazuhito Hatoh, Hideo Ohara, Kazufumi Nishida, Teruhisa Kanbara | 2004-02-10 |